“When you have a challenge and the response is equal to the challenge, that's called success. But once you have a new challenge, the old, once-successful response no longer works. That's why it is called a failure.” — Stephen R Covey
“It took me about 12 years to reach my million-word mark. The challenge now is to continue to challenge myself.” — Lynn Abbey
“I challenge you to make your life a masterpiece. I challenge you to join the ranks of those people who live what they teach, who walk their talk.” — Tony Robbins
“Champagne, if you are seeking the truth, is better than a lie detector. It encourages a man to be expansive, even reckless, while lie detectors are only a challenge to tell lies successfully.” — Graham Greene
“And obviously, from our own personal point of view, the principal challenge is a personal challenge.” — Richard Branson
“How many Catholic schools do you think teach the students to question the authority of the Pope? Do you believe Christian schools teach students to question or challenge the authority of Jesus Christ? Do military schools teach the cadets to challenge the authority.” — Neal Boortz
“Let me just tell you how thrilling it really is, and how, what a challenge it is, because in 1988 the question is whether we're going forward to tomorrow or whether we're going to go past to the - to the back!” — Dan Quayle
“Sometimes a contemporary film like Silence of the Lambs is difficult. To make it look real but interesting is always a challenge.” — Colleen Atwood
“The challenge for me has first been to see things as they are, whether a portrait, a city street, or a bouncing ball. In a word, I have tried to be objective.” — Berenice Abbott
“Give yourself an even greater challenge than the one you are trying to master and you will develop the powers necessary to overcome the original difficulty.” — William Bennett
“I think the biggest challenge for Somalia has been the sense that it is a hopeless case of incomprehensible internal conflicts and there is nothing we can do.” — Jan Egeland
“You can't be suspicious of a tree, or accuse a bird or a squirrel of subversion or challenge the ideology of a violet.” — Hal Borland